Fig. 4

Relationships between 1,25-dihydoxyvitamin D and radiological severity, parathyroid hormone and 25-hydroxyvitamin D at baseline. (a) 1,25-dihydroxyvitamin D by x-ray score (b) 1,25-dihydroxyvitamin D by parathyroid hormone (c) 1,25-dihydroxyvitamin D by 25-hydroxyvitamin D